US Amps 4000x Quick Test
#1
I got a cheap current clamp and DMM to give me an idea of the amperage my 4000x can pull while driving my DMX 12's (4ohm load)
95-105ACV @ speaker output during a 50hz tone test
The weird thing is the current clamp only shows about ~10-15 ACA on the power input and also the speaker output. But when I switch between the 200 and 1000ACA setting, the reading jumps to 40-90amps for a split second
I used 2 batteries with a good charger running 30 ACA
Anyone got any ideas why the ACA reading is so low?
[ March 31, 2004, 03:37 PM: Message edited by: Phiber Optik ]
95-105ACV @ speaker output during a 50hz tone test
The weird thing is the current clamp only shows about ~10-15 ACA on the power input and also the speaker output. But when I switch between the 200 and 1000ACA setting, the reading jumps to 40-90amps for a split second
I used 2 batteries with a good charger running 30 ACA
Anyone got any ideas why the ACA reading is so low?
[ March 31, 2004, 03:37 PM: Message edited by: Phiber Optik ]
#3
Speaker outputs relativly low current but I think it should still higher then the readings i'm getting
Check out the results of an Earthquake D3 test by DbDon
1 ohm Reactive load(with a 1 ohm sub in a low imp rise ported box)
73 Volts AC
27.8 Amps AC
185 amps of current draw
Power(Watts RMS)=2030.00
Impedence Rose to=2.626 ohms
Almost 28 ACA is not that low!
And the power input is pretty much the same ACA as the speaker output... That is weird
Check out the results of an Earthquake D3 test by DbDon
1 ohm Reactive load(with a 1 ohm sub in a low imp rise ported box)
73 Volts AC
27.8 Amps AC
185 amps of current draw
Power(Watts RMS)=2030.00
Impedence Rose to=2.626 ohms
Almost 28 ACA is not that low!
And the power input is pretty much the same ACA as the speaker output... That is weird
#4
You're comparing a D3 to a 4000x. If it were a 4000x with a 4000x, then there would be something funny with the setup. Some amps make their power using high output voltage to make up for a lower Amperage.
You're also comparing a class AB high current amp vs a Class D. In addition, you have an amp running at a 4 ohm load and the other at 1 ohm. These variables, let alone manufacturer itself, can make all the difference.
You're also comparing a class AB high current amp vs a Class D. In addition, you have an amp running at a 4 ohm load and the other at 1 ohm. These variables, let alone manufacturer itself, can make all the difference.
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